I get quite a few hits on the old articles about the old Servo Tester, it was a useful tool but I never quite got it to a state I would have been happy to sell. A little while ago I decided to start from scratch, designing something that would be viable to sell.

I often see people struggling to get all the peripheral parts connected up to an Arduino without running out of pins. The thing many people miss, especially early on, is you can connect multiple things to a single pin, so long as you do it right.